I’d bring your own sheets and towels, and even enough clothes and then some. I can’t imagine them setting aside your sheets and some towels and washing those separately. They use HUUUGE machines to wash sheets, blankets, towels, etc. (I saw Dirty Jobs lol) There is no way they could just do your stuff. As for the dryer and washer set aside…I seriously doubt it. Not to mention can you trust people to be honest and not use softener in them? Not everyone is that nice. Can you run the washer a cycle with nothing in it but some towels then toss then in a dryer to ‘wipe’ out any residues?
Also, you can most assuredly assume the blankets are all washed the same way and that you might need your own blanket.
PS: I asked my g-ma who used to work in a hotel and a hospital and oodles of bleach is used to sanitize the sheets, etc.
Oh and when you make your reservation and even once you go to your room, you might want to post a note on your wall or etc to the mousekeeping to not change your sheets or mess with your towels. You never know, they might not pay attention and grab one of your towels, etc